Size Does Not Make the Difference: 3D/4D Transperineal Sonographic Measurements of the Female Urethra in the Assessment of Urinary Incontinence Subtypes

Figure 2

Perineal ultrasound image on midsagittal plane from a patient at rest. The positions of symphysis (S), urethra (U), bladder (B), reference line (X), the line orthogonal to reference line (Y), and urethral lumen (proximal (U1), medial (U2), and distal (U3)) are indicated.